The table shows properties of some planets in the solar system.
Property Venus Earth Mars Jupiter Saturn Neptune
Average Distance from the Sun (AU) 0.72 1.0 1.5 5.2 9.5 30
Length of Year (Earth years) 0.62 1.0 1.9 11.9 29.4 164.8
Time for One Rotation (Earth days) 243 1.0 1.03 0.41 0.44 0.67
Mass (compared to Earth) 0.80 1.0 0.1 318 95 17
Surface Gravity (compared to Earth) 0.90 1.0 0.38 2.53 1.06 1.14
Size (compared to Earth) 0.94 1.0 0.53 11.0 9.1 3.9
Average Surface Temperature (ºC) 462 14 –62 –145 –140 –214
Number of Moons 0 1 2 79 82 14
Which planet is most similar in size to Earth?
(1 point)
Responses
Mars
Mars
Neptune
Neptune
Venus
Venus
Jupiter
Jupiter
Mars
Which percent of Earth’s atmosphere does carbon dioxide gas make up?(1 point)
Responses
more than 99 percent
more than 99 percent
less than 1 percent
less than 1 percent
about 78 percent
about 78 percent
about 21 percent
less than 1 percent
If the proportion of carbon dioxide in Earth’s atmosphere decreased significantly but the amount of atmosphere and the reflective properties of the atmosphere did not change, which effect would most likely occur?(1 point)
Responses
The temperature of Earth’s surface would increase because more solar energy would reach Earth.
The temperature of Earth’s surface would increase because more solar energy would reach Earth.
The temperature of Earth’s surface would increase because more heat would be trapped by the atmosphere.
The temperature of Earth’s surface would increase because more heat would be trapped by the atmosphere.
The temperature of Earth’s surface would decrease because less solar energy would reach Earth.
The temperature of Earth’s surface would decrease because less solar energy would reach Earth.
The temperature of Earth’s surface would decrease because more heat would escape into space.
The temperature of Earth’s surface would increase because more solar energy would reach Earth.
How does the proportion of carbon dioxide in the atmosphere differ between Earth and Venus? (1 point)
Responses
Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gasses trap more heat.
Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gasses trap more heat.
Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gasses trap less heat.
Venus's atmosphere has a higher proportion of carbon dioxide than Earth's, so greenhouse gasses trap less heat.
Venus's atmosphere has a lower proportion of carbon dioxide than Earth's, so greenhouse gasses trap less heat.
Venus's atmosphere has a lower proportion of carbon dioxide than Earth's, so greenhouse gasses trap less heat.
Venus's atmosphere has a lower proportion of carbon dioxide than Earth's, so greenhouse gasses trap more heat.